Abstract: A biologically pure culture of Bacillus sphaericus strain 205y capable of producing an organic solvent-tolerant lipase was isolated from soil samples via direct plating method using 1% (v/v) of either benzene, toluene, or mixture of benzene and toluene as their sole carbon source, ethyl benzene and ?-xylene. The lipase gene was isolated via genomic library and sequenced. The production of lipase gene from Bacillus sphaericus strain 205y is a novel gene. The lipase gene was cloned from Bacillus sphaericus strain 205y and the recombinant lipase was efficiently excreted into the culture medium using expression vectors bearing the lipase gene.

Abstract: A motor vehicle bumper system includes a bumper unit having pairs of hydraulic cylinders controlled to move a bumper between an extended position and a retracted position, a pump controlled to pump the oil from an oil tank to the hydraulic cylinders to move the bumper between the extended position and the retracted position, a pressure-setup pipe unit connected between the hydraulic cylinders, the pump and the oil tank and equipped with a decompression valve and controlled by a direction control valve to let the oil be alternatively pumped to the upper oil chambers and lower oil chambers of the hydraulic cylinders to retract or extend out the bumper, and a pressure-relief pipe unit using a relief valve and an accumulator to release pressure from the hydraulic cylinders and a hydraulic oil pressure sensor to control the explosion time of the air bag of the motor vehicle.

Abstract: A motor vehicle bumper system includes a bumper unit having pairs of hydraulic cylinders controlled to move a bumper between an extended position and a retracted position, a pump controlled to pump the oil from an oil tank to the hydraulic cylinders to move the bumper between the extended position and the retracted position, a pressure-setup pipe unit connected between the hydraulic cylinders, the pump and the oil tank and equipped with a decompression valve and controlled by a direction control valve to let the oil be alternatively pumped to the upper oil chambers and lower oil chambers of the hydraulic cylinders to retract or extend out the bumper, and a pressure-relief pipe unit using a relief valve and an accumulator to release pressure from the hydraulic cylinders and a hydraulic oil pressure sensor to control the explosion time of the air bag of the motor vehicle.

Abstract: A motor vehicle bumper system includes a bumper unit having pairs of hydraulic cylinders controlled to move a bumper between an extended position and a retracted position, a pump controlled to pump the oil from an oil tank to the hydraulic cylinders to move the bumper between the extended position and the retracted position, a pressure-setup pipe unit connected between the hydraulic cylinders, the pump and the oil tank and equipped with a decompression valve and controlled by a direction control valve to let the oil be alternatively pumped to upper oil chambers and lower oil chambers of the hydraulic cylinders to retract or extend out the bumper, and a pressure-relief pipe unit using a relief valve and an accumulator to release pressure from the hydraulic cylinders and a hydraulic oil pressure sensor to control the explosion time of the air bag of the motor vehicle.

Abstract: A shock-absorbing system for as automotive vehicle. the system comprises a hydraulic oil circuit which includes a storage tank for storing hydraulic oil, electric motor for driving the pump. Front and rear bumper subsystems for respectively extending and retracting of front rear bumpers, a pressure, a electric circuit subsystem for controlling valves, and valves control subsystem.

Abstract: A shock-absorbing bumper system for an automotive vehicle includes a conduit subsystem for conducting hydraulic fluid therein, a supply subsystem for supplying hydraulic fluid, a pressure-balancing subsystem for regulating the pressure of hydraulic fluid, front and rear bumper subsystems for respectively extending and retracting front and rear bumpers and for absorbing shock, a switching subsystem for directing hydraulic fluid, and a feedback subsystem for absorbing shock.